Patch 6.2.0 (23-Jun-2015): Might of the Frozen Wastes now increases Frost Strike's damage by 100% (up from 50%) while dual-wielding.

Patch 6.0.2 (14-October-2014): Might of the Frozen Wastes now increases the damage of Obliterate by 50% (up from 40%) and melee damage by 35% (up from 30%) while wielding a two-handed weapon, and increases the damage of Frost Strike by 50% (up from 35%) while dual-wielding.

Patch 5.4.0 (10-Sep-2013) Might of the Frozen Wastes now increases all melee attack damage by 30% (up from 20%).